Type-writing machine.



W. S. IRELAND.

TYPE WRITING MACHINE. APPLICATION rxmzn APB. 531910.

Patented Jan. 3, 1911.

2 SHEETS-SHEET 1.

W. S. IRELAND.

TYPE WRITING MAUHINE.

APPLICATION FILED APR. 5, 1910.

Patented Jan. 3, 1911.

2 Bani-3- 2' WARD S IRELAND. 01 DALLAS, TEXAS.

TYPE-WRITING MACHINE.

Specification of Application tiled April 5,

T 0 all whom it may concern:

licit known that I, Cum S. lmzrlmn, of Dallas, in the ct'iunty of Dallasand State of TCXHSJHUQ invented certain new and useful Im movements inType-\Vriting Machines; and I do hereby declare the following to be afulhclear, and exact description of the invention, such as will enableothers skilled in the artto which it appertuins to make and use thesame.

This invention relates to improvements in typewritin machines such asare particularly adaptabie'for stcnographic writing.

The ob ect of my present invention is to so construct a ty ewritingmachine of the character specific that the noise created by theoperation of the machine will be reduced to a minimum.

A further object is to construct the writing mechanism in such mannerthat the. ends of the ty e-bars to which the type.are secured sha 1 becaused to more a veryslight distance in their cotiperation with thelaten and still have adequate force applied t ereto tocfi'ect clearimpressions u on the paper and without the necessity o applyingexcessive pressure upon the keys, or depressing them more than a verylimited distance.

With these objects in viewthc invention consists in certain novelfeatures of construc tion and combinations of parts as herein after setforth and pointed out in the claims.

In the accom anying drawings, Figure 1 is a longitudina sectional viewof a portion of a typewriting machine showing an em; bodiment of myinvention. Fig. 2 is a. plan view of the same, and Fig. 3 is a detailview.

1 represents\the frame of the machine, between the sides of which a bar2 is so cured in the lower intermediate portion of the machine. ,Thisbar is widened somewhat at itsintermediate portion and provided with aseries of parallel fingers 3 forming slots 4 between them for theaccommodation of key-bars-fi ---the latter bein provided at. their rearends with suitable eye or finger buttons 6.-- The fingers 3 of bar 2 areslotted as at 7 to permit t e insertion of a fulcrum rod 8 and thekey-bars 5 are provided with slots 9 to receive said fulcrum-bar whenthe key-bars are inserted in the slot 4.. Each key-bar is rovided at,its pivoted end with an upward y projectlng arm 10 constituting onemember of a. to g1e-lever,--the other member of said toggleever beingformed by a type bar 11. The type-bars 11 are arranged UNITED STATESPATENT OFFICE.

Lett r Patent- Iutcntctl Jan. 3, 1911.

1910. Serial No. 553.436.

l in a straighthorizontal line. side by side, and are pivotallysupported by a fulcrum- 15 provided with a slot 17 to receive a headedpm 18 on the arm 10 whereby the latter is oosely connected with saidtype-bar. Each' type-bar 11 has rigidly secured to its upper end a ty 19which, when the parts are at rest. is, is osed a slight distance from aplaten 20. his platen is made in the form ofa barprovided at its endswith parallel upon a shaft. 22 disposed between the. sides 0 the frame 1and the rear ends of these arms normally rest; against the undersidemallv in position. A roller 24 is mounted on the shaft'22 to serve as apaper guide and a p or reel 25 is mounted on suitable supports 6,thepaper from said rec] being caused to pass upwardly over the edge of of abar 23 secured to the'fra'me 1 whereby the platen bar 20 will bemaintained nor-.

theplatcn bar 20 and then over the guide rod 1:! passing through saidtypwbars a norm c ployed. The lower end of each type-bar 11 arms 21pivotally supported a comparatively 76. short distance forwardly oftheir rear ends roll 24. By pivotally mounting the platen fraine, it maybe raised to facilitate the threading of the paper. Guides 27 for an:

inking ribbon 28 are supported by brackets;

art of the framework and this inkia ribon passes between the ape'r onthe the platenbar 20 and t ie type.

29 secured to the bar 15 or any convenient;

geof

The.type on the ty e-bars 11 are main-f tained normally a slip tdistance fromthl. inking ribbon and the key-bars are retained} andreturned to their normal positions by. means of springs 30. each ofwhich is attached at one end to a fixed rod 31 and at the other'cnd withthe arm 10 of the kc latter. When a lteydever is depressed, the uni 10on said lever'cotiperatin' with the longer arm of the type-bar 11 wilcause the upper press the inking ribbon against the paper passing overthe platen bar. This slight appreciable sound in its coiiperation withthe bar slightly above the pivoted end of t e end of said type-bar tomove sutliciently to nomovement of the type will not cause an platen bar20,.but' the force-whichis ap lied to the type-bar or lever by reasonthe leverage afforded by the connection of the longer arm of thetype-bar or lever with the arm on the key-bar, will be sufficient tocause a proper impression to be made by ressure rather than by a blow.In eliminatmg the hammer action and relying upon pressure to cause theimpressions to he made upon the pa er, I am enabled to render theoperation 0 the machine practically noiseless, which is a matter ofconsiderable importance in a stenographic typewriting machine.

It will be observed that the type-bars or levers'are arranged in astraight horizontal line with the type permanently secured to theirupper ends. \Vithsuch arrangementand construction, proper alinement ofthe writing will always be maintained withoutnecessity for anyadjustment after the parts shall have been once assembled.

An important feature of my improvements is the provision of front-strokenoiseless type-bars so arranged that the writing will appear in astraight line.

Having fully described my invention what 1 claim as new and desireters-Patent, is,

1. In a typewriting machine, the combination with a, platen, of a seriesof approximately vertical type-bars liavingty'pe normally disposedcomparatively close .to the platen, "each of said type-bars'pivotally.sup-

to secure by .Let-

ported between its ends and adapted toave a sliorttstroke toward theplaten. and pivotally mounted key-levers, each having a memberlooselyconnected with the lower arm of a typebar. 1

2. In a typewriting' machine, the combination with a platen, of a seriesof approxi mately vertical t "pe-bars or levers, each pivotally S.P rteand provi ed at the end Q its shorter arm with a t pe, andka series ofkey-levers; each rovide with anupwardly projecting memer looselyconnected at its upper end with above its central portion the longerdepending aim of the adjacent type-baror lever.

3. In a typewriting machine, the combination with a platen, of a. seriesof approximately vertical type-bars or levers arran ed in a straighthorizontal line and provi ed at their upper ends with type disposedshort distances from said platen, means for pivotally supporting saidtype-bars or levers between their ends, a series of key-levers, eachprovided with an upwardly projecting .member loosely connected at itsupper end with the lower end of the adjacent type-bar or lever. v

4. In a typewriting machine, the combination with a platen, of a seriesof approximately vertical type-bars or levers provided with typenormally disposed short distances from said platen, means pivotallysupporting said type-bars or levers at points below their upper ends, aseries of key-levers rovidedwith upwardly projecting mem rs looselyconnected at their upper ends with the lower ends of the type-barsorlevers, 7 means for supporting sa1d'key-levers'adjacentto the junctureof the upwardly projectin membersthe'rewith, 'and springs connecte withthe lower ortions of said up-- wardl projecting mem rs and attached to afixe support.

' 5. In a typewriting machine, the combination with a plurality oftype-bars-arranged side by side in a straight -l1ne'and carrying type,of a bar platen provided with arms piv- 30 otally supported betweentheir ends, and

meansen'gaging the free ends of said arms for maintaining the platennormally in a horizontal position in'front of the'type on the type-bars.

In testimony whereof, I have signed this specification in the presenceof twosubscribing witnesses.

' WARD S. IRELAND.

- VVitne'sses: 4

' S. G. NOT INGHAM,

G120. F. Downme.

